Hint # 1- Subtract the area of the small rectangle and the area of the triangle from the area of the large rectangle.

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Thank you in advance! Stay safe and blessed! The Lord loves you and won’t ever stop loving you!

Assume that there is a 11% rate of disk drive failure in a year. a. if all your computer data is stored on a hard disk drive with a copy stored on a second hard disk drive, what is the probability that during a year, you can avoid catastrophe with at least one working drive? b. if copies of all your computer data are stored on four independent hard disk drives, what is the probability that during a year, you can avoid catastrophe with at least one working drive?